Reactif 4B Urinalysis Strips (Tube)


100 Reactif 4B urinalysis strips for the simultaneous detection of 4 parameters in urine.


Package contents:

100 test strips in a tube

1 package insert

Exclusively for professional users

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Product description

For rapid detection of multiple analytes in human urine. For professional in-vitro diagnostic use only.

The Reactif 4B urinalysis strips are solid plastic strips on which multiple, separated reagent fields are applied. The test is for the qualitative and semi-quantitative detection of one or more of the following analytes in urine: glucose, leucocytes, nitrite and proteins. The Reactif urinalysis strips are intended for single use at sites close to the patient (point of care) and central laboratories.
The cardboard label lists the respective analytes - compare the corresponding analyte with the fields on the colour scale. The Reactif urinalysis strips can be read optically as well as evaluated with the help of the urinalysis device and are intended for professional use only.
In the course of an illness or when the body is malfunctioning, urine undergoes many changes before the blood composition changes to a clearly recognisable extent. Urinalysis is a useful procedure as an indicator of health or disease, and as such is used in routine health screening. The Reactif urinalysis strip can be used in determining general health status and helps in the diagnosis and monitoring of metabolic or systemic diseases affecting renal function, endocrine disorders and urinary tract diseases or disorders.

Normal urine specimens usually give negative results. Trace results may be of questionable clinical significance. If trace results occur, it is recommended to repeat the test with a fresh sample from the same patient. Repeated traces and positive results are of clinical significance.

This test is not affected by the presence of ketone or urine pH. The test is based on a specific glucose oxidase/peroxidase (GOD/POD) reaction.

This test is based on the conversion of nitrate to nitrite by gram-negative bacteria in urine. In an acidic environment, nitrite in urine reacts with p-arsanilic acid and forms a diazonium compound. The diazonium compound in turn binds to 1 N-(1-naphthyl) ethylenediamine and produces a pink colour. Nitrite is not detectable in normal urine. The nitrite colour field may become positive in some infections, depending on the length of time the urine remains in the bladder before collection. Positive samples detected by the nitrite test range from values < 40% when urine has been in the bladder for a short time to approximately 80% when urine has been in the bladder for at least 4 hours.

At a constant pH, any development of a green colour is due to the presence of protein. The colours range from yellow to yellow-green for negative results and from green to green-blue for positive results. A normal kidney can excrete 1-14 mg/dL of protein. Definite proteinuria is indicated when the colour developed is attributable to any colour field indicating more than trace. Clinical judgement is required to assign significance to detected traces.

More Information

More Information
SKU 41042-L
Testformat test strip
Sample type Urine
Package size 100 test strips per tube
Detection time Test time for all urinalysis strips 1-2 minutes
Storage temperature The test should be stored at 2 - 30 °C
Suitable devices Reactif Touch
CE-Label Yes


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